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Is Lightning as Fast as Light?

Published in Lightning Speed 1 min read

No, lightning is not as fast as light. While the flash we see from a lightning strike travels at the speed of light, the actual lightning bolt moves much slower.

Understanding the Speed Differences

It's important to distinguish between the visual flash and the physical strike. The speed discrepancy is considerable.

Feature Speed
Visual Flash Speed of light (670,000,000 mph)
Lightning Strike 270,000 mph

How Fast is a Lightning Strike, Really?

According to the reference, a lightning strike travels at approximately 270,000 mph.

  • Example: At this speed, it would take roughly 55 minutes for lightning to travel to the moon.
  • Example: It would take about 1.5 seconds for lightning to travel from London to Bristol.

Key Takeaway

The light we see moves at light speed, but the electrical discharge of a lightning strike is far slower.

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